Hybrid Waterjet Ferries Mark a First in U.S. Maritime Sustainability

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Marine Jet Power (MJP) and Derecktor Shipyards New York have launched the first hybrid passenger ferries in the United States powered by waterjet propulsion. Commissioned by Chatham Area Transit (CAT) in Savannah, Georgia, these vessels represent a step forward in sustainable transportation.

The 65-foot ferries, Juliette Gordon Low II and Susie King Taylor II, are equipped with MJP UltraJet 305 waterjets and a serial hybrid propulsion system. This system integrates permanent magnet traction motors with BAE HybriGen® Power, supported by Cummins 6.7L Marine Diesel Engines and HDS 200 Integrated Starter Generators. The technology enhances power efficiency, reduces emissions, and minimizes environmental impact.

Environmental and Operational Benefits

Designed for continuous operations on short routes, the ferries’ hybrid propulsion systems optimize energy use and provide reduced fuel consumption and emissions. The shallow draft and enhanced maneuverability of waterjets allow the vessels to adapt to varying tidal conditions and frequent docking requirements.

“Chatham Area Transit faced specific operational challenges, including frequent docking and varying currents. Waterjets, with their inherent maneuverability and seamless integration with hybrid-electric systems, provided the perfect answer,” said Kevin Kirby, President and Regional Director of Marine Jet Power Americas.

Industry Expertise and Collaboration

Derecktor Shipyards, a leader in hybrid vessel construction, leveraged its expertise to build the ferries. With four hybrid vessels launched in 2014, the company continues prioritizing sustainable solutions in marine construction.

“Building these hybrid waterjet ferries allowed us to apply our experience and strengthen our role in advancing sustainable maritime technology,” said Erik Derecktor, New Construction Commercial Manager for Derecktor Shipyards.

The partnership between CAT, MJP, and Derecktor demonstrates the potential of collaborative efforts to address environmental goals while meeting the operational needs of urban transit systems.

Derecktor Shipyards

Derecktor Shipyards has launched several hybrid vessels in the United States, including:

  • Spirit of the Sound: Launched in September 2014 for The Maritime Aquarium of Norwalk, Connecticut, this 65-foot aluminum catamaran serves as a research vessel.
  • CUNY I: Launched in May 2017 for the City University of New York's Brooklyn College, this 65-foot catamaran conducts research in Jamaica Bay and Long Island Sound.
  • Captain Ben Moore: Launched in April 2019 for Harbor Harvest, a Norwalk, Connecticut-based company, this 65-foot aluminum catamaran transports fresh produce and goods between Connecticut and Long Island, New York.

Vessel Specifications

  • Length Overall: 65 feet
  • Maximum Speed: 11 knots
  • Hull: Welded aluminum
  • Propulsion: Two MJP UltraJet 305 waterjets
  • Electric Motor: Permanent magnet traction motor, BAE HybriGen® Power
  • Engines: Cummins 6.7L Marine Diesel

The ferries are en route to Savannah and will begin passenger service in the coming weeks.

Environment + Energy Leader